If boulder is tops what is second tier?

If we would assign A++ to boulder, what phono preamps rate as A+?
What would be considered just a notch below the boulder?
Would this include: the Manley steelhead, the Aesthetix IO signature, ASR Basis Exclusive mark II, the BAT VKP10SE super pack, the Einstein?
What others belong to this group or which of these doesn't?